copy_user_page() is needed by DAX. Without this we get a compile error for DAX on SH: fs/dax.c:280:2: error: implicit declaration of function ‘copy_user_page’ [-Werror=implicit-function-declaration] copy_user_page(vto, (void __force *)vfrom, vaddr, to); ^ This was done with a random config that happened to include DAX support. This patch has only been compile tested. Signed-off-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx> Reported-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> --- Apologies for the resend, I wanted to add some more recipients. --- arch/sh/include/asm/page.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/sh/include/asm/page.h b/arch/sh/include/asm/page.h index fe20d14..ceb5201 100644 --- a/arch/sh/include/asm/page.h +++ b/arch/sh/include/asm/page.h @@ -59,6 +59,7 @@ pages_do_alias(unsigned long addr1, unsigned long addr2) #define clear_page(page) memset((void *)(page), 0, PAGE_SIZE) extern void copy_page(void *to, void *from); +#define copy_user_page(to, from, vaddr, pg) __copy_user(to, from, PAGE_SIZE) struct page; struct vm_area_struct; -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html